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#!/usr/bin/env python3
# SPDX-FileCopyrightText: 2013 Ole Martin Bjorndalen <ombdalen@gmail.com>
#
# SPDX-License-Identifier: MIT
"""
Create a new MIDI file with some random notes.
The file is saved to test.mid.
"""
import random
import sys
from mido import MAX_PITCHWHEEL, Message, MidiFile, MidiTrack
notes = [64, 64 + 7, 64 + 12]
outfile = MidiFile()
track = MidiTrack()
outfile.tracks.append(track)
track.append(Message('program_change', program=12))
delta = 300
ticks_per_expr = int(sys.argv[1]) if len(sys.argv) > 1 else 20
for i in range(4):
note = random.choice(notes)
track.append(Message('note_on', note=note, velocity=100, time=delta))
for j in range(delta // ticks_per_expr):
pitch = MAX_PITCHWHEEL * j * ticks_per_expr // delta
track.append(Message('pitchwheel', pitch=pitch, time=ticks_per_expr))
track.append(Message('note_off', note=note, velocity=100, time=0))
outfile.save('test.mid')
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